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TM-9-2350-261-20-1 Unit Maintenance Manual Volume 1 M113A2 M577A2 M1064 M1068 M1059 M901A1 Download

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TM 9-2350-261-20-1 INFRARED HEADLIGHT(S) DOES NOT OPERATE — Continued 0032 00 2Y 1. Turn MASTER SWITCH to OFF (see your -10). 2. Remove hull front access cover (WP 0429 00). 3. Remove front main harness plug (1) from dimmer switch jack (2). 4. Turn MASTER SWITCH to ON (see your -10). 5. Measure voltage between front main harness plug (1) pin C (3) and ground. 6. Does multimeter read less than 17 volts? 2YN GO TO CY (PAGE 0032 00-7) 3Y 1. Turn MASTER SWITCH to OFF (see your -10). 2. Remove instrument panel for access (WP 0238 00). 3. Remove front main harness circuit 514/515 (1) and 520 (2) from IR/BO selector switch jacks (3) and (4). 4. Measure resistance between IR/BO selector switch jacks (3) and (4). 5. Does multimeter read 0 ohms? 3YN 1. Install dimmer switch and front main harness plug on dimmer switch. 2. Replace IR/BO selector switch (WP 0241 00). 3. Verify no faults found. 0032 00-2